Engine Hanging Problem (bolt spacer)!

P

pilot28906

Well Known Member

• Sep 22, 2018

• #1

We just started hanging the engine and the spacers that the bolts go through for the mount are too small. The -7 bolts will not go into the ID of the metal spacers. Do the spacers get reamed or do I have the wrong spacers? Any help would be appreciated.

Thanks,
John

 

Mel

Legacy Member

Mentor

• Sep 22, 2018

• #2

Sounds like you have the wrong spacers. They should slip right through. They should not even be a tight fit.

 

P

pilot28906

Well Known Member

• Sep 22, 2018

• #3

The spacer part number matches the drawing. The I.D. of the spacers are .4255". How large is the ID supposed to be?

 

J

jrs14855

Well Known Member

• Sep 22, 2018

• #4

Bushings

The generic id for the bushings would be around .447. AN7 bolt would be around .435/.436. AN bolts typically measure about .0015/.002 under the nominal size. Size of the spacer is not critical, only the length is important. You can make some spacers from 9/16" x .058 4130 tubing.

 

P

pilot28906

Well Known Member

• Sep 22, 2018

• #5

I reamed the ID and they worked fine.